1 /* 2 * Copyright © 2006-2011 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: 24 * jim liu <jim.liu@intel.com> 25 */ 26 27 #include <linux/pm_runtime.h> 28 29 #include <drm/drm.h> 30 #include <drm/drm_crtc.h> 31 #include <drm/drm_crtc_helper.h> 32 #include <drm/drm_edid.h> 33 #include <drm/drm_modeset_helper_vtables.h> 34 #include <drm/drm_simple_kms_helper.h> 35 36 #include "cdv_device.h" 37 #include "psb_drv.h" 38 #include "psb_intel_drv.h" 39 #include "psb_intel_reg.h" 40 41 /* hdmi control bits */ 42 #define HDMI_NULL_PACKETS_DURING_VSYNC (1 << 9) 43 #define HDMI_BORDER_ENABLE (1 << 7) 44 #define HDMI_AUDIO_ENABLE (1 << 6) 45 #define HDMI_VSYNC_ACTIVE_HIGH (1 << 4) 46 #define HDMI_HSYNC_ACTIVE_HIGH (1 << 3) 47 /* hdmi-b control bits */ 48 #define HDMIB_PIPE_B_SELECT (1 << 30) 49 50 51 struct mid_intel_hdmi_priv { 52 u32 hdmi_reg; 53 u32 save_HDMIB; 54 bool has_hdmi_sink; 55 bool has_hdmi_audio; 56 /* Should set this when detect hotplug */ 57 bool hdmi_device_connected; 58 struct drm_device *dev; 59 }; 60 61 static void cdv_hdmi_mode_set(struct drm_encoder *encoder, 62 struct drm_display_mode *mode, 63 struct drm_display_mode *adjusted_mode) 64 { 65 struct drm_device *dev = encoder->dev; 66 struct gma_encoder *gma_encoder = to_gma_encoder(encoder); 67 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 68 u32 hdmib; 69 struct drm_crtc *crtc = encoder->crtc; 70 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 71 72 hdmib = (2 << 10); 73 74 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) 75 hdmib |= HDMI_VSYNC_ACTIVE_HIGH; 76 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) 77 hdmib |= HDMI_HSYNC_ACTIVE_HIGH; 78 79 if (gma_crtc->pipe == 1) 80 hdmib |= HDMIB_PIPE_B_SELECT; 81 82 if (hdmi_priv->has_hdmi_audio) { 83 hdmib |= HDMI_AUDIO_ENABLE; 84 hdmib |= HDMI_NULL_PACKETS_DURING_VSYNC; 85 } 86 87 REG_WRITE(hdmi_priv->hdmi_reg, hdmib); 88 REG_READ(hdmi_priv->hdmi_reg); 89 } 90 91 static void cdv_hdmi_dpms(struct drm_encoder *encoder, int mode) 92 { 93 struct drm_device *dev = encoder->dev; 94 struct gma_encoder *gma_encoder = to_gma_encoder(encoder); 95 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 96 u32 hdmib; 97 98 hdmib = REG_READ(hdmi_priv->hdmi_reg); 99 100 if (mode != DRM_MODE_DPMS_ON) 101 REG_WRITE(hdmi_priv->hdmi_reg, hdmib & ~HDMIB_PORT_EN); 102 else 103 REG_WRITE(hdmi_priv->hdmi_reg, hdmib | HDMIB_PORT_EN); 104 REG_READ(hdmi_priv->hdmi_reg); 105 } 106 107 static void cdv_hdmi_save(struct drm_connector *connector) 108 { 109 struct drm_device *dev = connector->dev; 110 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 111 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 112 113 hdmi_priv->save_HDMIB = REG_READ(hdmi_priv->hdmi_reg); 114 } 115 116 static void cdv_hdmi_restore(struct drm_connector *connector) 117 { 118 struct drm_device *dev = connector->dev; 119 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 120 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 121 122 REG_WRITE(hdmi_priv->hdmi_reg, hdmi_priv->save_HDMIB); 123 REG_READ(hdmi_priv->hdmi_reg); 124 } 125 126 static enum drm_connector_status cdv_hdmi_detect( 127 struct drm_connector *connector, bool force) 128 { 129 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 130 struct mid_intel_hdmi_priv *hdmi_priv = gma_encoder->dev_priv; 131 struct edid *edid = NULL; 132 enum drm_connector_status status = connector_status_disconnected; 133 134 edid = drm_get_edid(connector, connector->ddc); 135 136 hdmi_priv->has_hdmi_sink = false; 137 hdmi_priv->has_hdmi_audio = false; 138 if (edid) { 139 if (edid->input & DRM_EDID_INPUT_DIGITAL) { 140 status = connector_status_connected; 141 hdmi_priv->has_hdmi_sink = 142 drm_detect_hdmi_monitor(edid); 143 hdmi_priv->has_hdmi_audio = 144 drm_detect_monitor_audio(edid); 145 } 146 kfree(edid); 147 } 148 return status; 149 } 150 151 static int cdv_hdmi_set_property(struct drm_connector *connector, 152 struct drm_property *property, 153 uint64_t value) 154 { 155 struct drm_encoder *encoder = connector->encoder; 156 157 if (!strcmp(property->name, "scaling mode") && encoder) { 158 struct gma_crtc *crtc = to_gma_crtc(encoder->crtc); 159 bool centre; 160 uint64_t curValue; 161 162 if (!crtc) 163 return -1; 164 165 switch (value) { 166 case DRM_MODE_SCALE_FULLSCREEN: 167 break; 168 case DRM_MODE_SCALE_NO_SCALE: 169 break; 170 case DRM_MODE_SCALE_ASPECT: 171 break; 172 default: 173 return -1; 174 } 175 176 if (drm_object_property_get_value(&connector->base, 177 property, &curValue)) 178 return -1; 179 180 if (curValue == value) 181 return 0; 182 183 if (drm_object_property_set_value(&connector->base, 184 property, value)) 185 return -1; 186 187 centre = (curValue == DRM_MODE_SCALE_NO_SCALE) || 188 (value == DRM_MODE_SCALE_NO_SCALE); 189 190 if (crtc->saved_mode.hdisplay != 0 && 191 crtc->saved_mode.vdisplay != 0) { 192 if (centre) { 193 if (!drm_crtc_helper_set_mode(encoder->crtc, &crtc->saved_mode, 194 encoder->crtc->x, encoder->crtc->y, encoder->crtc->primary->fb)) 195 return -1; 196 } else { 197 const struct drm_encoder_helper_funcs *helpers 198 = encoder->helper_private; 199 helpers->mode_set(encoder, &crtc->saved_mode, 200 &crtc->saved_adjusted_mode); 201 } 202 } 203 } 204 return 0; 205 } 206 207 /* 208 * Return the list of HDMI DDC modes if available. 209 */ 210 static int cdv_hdmi_get_modes(struct drm_connector *connector) 211 { 212 struct edid *edid = NULL; 213 int ret = 0; 214 215 edid = drm_get_edid(connector, connector->ddc); 216 if (edid) { 217 drm_connector_update_edid_property(connector, edid); 218 ret = drm_add_edid_modes(connector, edid); 219 kfree(edid); 220 } 221 return ret; 222 } 223 224 static enum drm_mode_status cdv_hdmi_mode_valid(struct drm_connector *connector, 225 struct drm_display_mode *mode) 226 { 227 if (mode->clock > 165000) 228 return MODE_CLOCK_HIGH; 229 if (mode->clock < 20000) 230 return MODE_CLOCK_HIGH; 231 232 /* just in case */ 233 if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 234 return MODE_NO_DBLESCAN; 235 236 /* just in case */ 237 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 238 return MODE_NO_INTERLACE; 239 240 return MODE_OK; 241 } 242 243 static void cdv_hdmi_destroy(struct drm_connector *connector) 244 { 245 struct gma_connector *gma_connector = to_gma_connector(connector); 246 struct gma_i2c_chan *ddc_bus = to_gma_i2c_chan(connector->ddc); 247 248 gma_i2c_destroy(ddc_bus); 249 drm_connector_cleanup(connector); 250 kfree(gma_connector); 251 } 252 253 static const struct drm_encoder_helper_funcs cdv_hdmi_helper_funcs = { 254 .dpms = cdv_hdmi_dpms, 255 .prepare = gma_encoder_prepare, 256 .mode_set = cdv_hdmi_mode_set, 257 .commit = gma_encoder_commit, 258 }; 259 260 static const struct drm_connector_helper_funcs 261 cdv_hdmi_connector_helper_funcs = { 262 .get_modes = cdv_hdmi_get_modes, 263 .mode_valid = cdv_hdmi_mode_valid, 264 .best_encoder = gma_best_encoder, 265 }; 266 267 static const struct drm_connector_funcs cdv_hdmi_connector_funcs = { 268 .dpms = drm_helper_connector_dpms, 269 .detect = cdv_hdmi_detect, 270 .fill_modes = drm_helper_probe_single_connector_modes, 271 .set_property = cdv_hdmi_set_property, 272 .destroy = cdv_hdmi_destroy, 273 }; 274 275 void cdv_hdmi_init(struct drm_device *dev, 276 struct psb_intel_mode_device *mode_dev, int reg) 277 { 278 struct gma_encoder *gma_encoder; 279 struct gma_connector *gma_connector; 280 struct drm_connector *connector; 281 struct mid_intel_hdmi_priv *hdmi_priv; 282 struct gma_i2c_chan *ddc_bus; 283 int ddc_reg; 284 int ret; 285 286 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL); 287 if (!gma_encoder) 288 return; 289 290 gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL); 291 if (!gma_connector) 292 goto err_free_encoder; 293 294 hdmi_priv = kzalloc(sizeof(struct mid_intel_hdmi_priv), GFP_KERNEL); 295 if (!hdmi_priv) 296 goto err_free_connector; 297 298 connector = &gma_connector->base; 299 connector->polled = DRM_CONNECTOR_POLL_HPD; 300 gma_connector->save = cdv_hdmi_save; 301 gma_connector->restore = cdv_hdmi_restore; 302 303 switch (reg) { 304 case SDVOB: 305 ddc_reg = GPIOE; 306 gma_encoder->ddi_select = DDI0_SELECT; 307 break; 308 case SDVOC: 309 ddc_reg = GPIOD; 310 gma_encoder->ddi_select = DDI1_SELECT; 311 break; 312 default: 313 DRM_ERROR("unknown reg 0x%x for HDMI\n", reg); 314 goto err_free_hdmi_priv; 315 } 316 317 ddc_bus = gma_i2c_create(dev, ddc_reg, 318 (reg == SDVOB) ? "HDMIB" : "HDMIC"); 319 if (!ddc_bus) { 320 dev_err(dev->dev, "No ddc adapter available!\n"); 321 goto err_free_hdmi_priv; 322 } 323 324 ret = drm_connector_init_with_ddc(dev, connector, 325 &cdv_hdmi_connector_funcs, 326 DRM_MODE_CONNECTOR_DVID, 327 &ddc_bus->base); 328 if (ret) 329 goto err_ddc_destroy; 330 331 ret = drm_simple_encoder_init(dev, &gma_encoder->base, 332 DRM_MODE_ENCODER_TMDS); 333 if (ret) 334 goto err_connector_cleanup; 335 336 gma_connector_attach_encoder(gma_connector, gma_encoder); 337 gma_encoder->type = INTEL_OUTPUT_HDMI; 338 hdmi_priv->hdmi_reg = reg; 339 hdmi_priv->has_hdmi_sink = false; 340 gma_encoder->dev_priv = hdmi_priv; 341 342 drm_encoder_helper_add(&gma_encoder->base, &cdv_hdmi_helper_funcs); 343 drm_connector_helper_add(connector, 344 &cdv_hdmi_connector_helper_funcs); 345 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 346 connector->interlace_allowed = false; 347 connector->doublescan_allowed = false; 348 349 drm_object_attach_property(&connector->base, 350 dev->mode_config.scaling_mode_property, 351 DRM_MODE_SCALE_FULLSCREEN); 352 353 hdmi_priv->dev = dev; 354 return; 355 356 err_connector_cleanup: 357 drm_connector_cleanup(connector); 358 err_ddc_destroy: 359 gma_i2c_destroy(ddc_bus); 360 err_free_hdmi_priv: 361 kfree(hdmi_priv); 362 err_free_connector: 363 kfree(gma_connector); 364 err_free_encoder: 365 kfree(gma_encoder); 366 } 367